KR100748830B1 - Coil type meter - Google Patents

Abstract

The present invention provides a compact coil-type gauge even when the rotational shaft on the guide side is decelerated by a gear, and includes a rotor shaft (3) having a rotor magnet (1) and a first gear (2) and a first gear. A guide shaft 5 having a second gear 4 connected to (2), a housing 6 and a second gear supporting the guide shaft 5 and the rotor shaft 3 side by side; It is characterized in that the coil-type instrument is constituted by a pair of coils 7 and 8 which are disposed opposite to the outer circumferential side of the rotor magnet 1, in which 4) is not arranged, to impart rotational force to the rotor magnet 1 by energization. .

Description

Coil Type Instrument {COIL TYPE METER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil type instrument for rotating a rotor magnet by energization of a coil, for example, to a coil type instrument embedded in a vehicle combination instrument.

As coiled instruments applied to automotive instruments, for example cross-coiled instruments are generally well known. The cross-coiled instrument is also called an air core type movement, which houses the rotor magnet in a space formed in the housing, supports the rotor shaft fixed to the rotor magnet on the housing, and protrudes one end out of the housing. In this case, a guide is attached to the protruding end, and a pair of coils are wound around the outer periphery of the housing so that the rotor magnets (instructions) are rotated by a synthetic magnetic field generated by energization of each coil. The direction of the guideline can be angularly driven according to the measured amount by adjusting the amount of energization (input signal).

By the way, in such a cross-coil instrument, the winding for each coil caused by stacking and winding a pair of coils in an alternating state is caused by a difference in diameter dimensions, magnetic hysteresis, and the like. It is known that an error occurs in the output angle) and appears as a map error. For this reason, as disclosed in, for example, Japanese Unexamined Patent Publication No. 6-27146, the rotor shaft to which the rotor magnet is fixed and In addition, it is conceivable to install a guide shaft to which the guide is fixed separately, and to connect both shafts by gears to decelerate and rotate the guide shaft with respect to the rotor shaft to suppress the occurrence of guidance errors.

However, the coil type gauge disclosed in the above publication not only winds a pair of coils stacked on the housing, but also stacks the gears on the coil wound housing so that the height of the gauge increases due to the overlapping structure. There is.

The present invention has been made in view of this point, and its main object is to provide a compact coil-type instrument even when the rotational shaft on the guide side is decelerated and rotated through a gear.

The coiled instrument of the present invention is a rotor shaft having a rotor magnet and a first gear that rotates with the rotor magnet, a guide shaft having a second gear connected to the first gear, and the rotor without the second gear being disposed. A pair of coils arranged opposite to the outer circumferential side of the magnet to impart rotational force to the rotor magnet by energization can be used as a compact coil gauge even when the rotating shaft on the guide side is decelerated and rotated through a gear.

In addition, the coil type instrument of the present invention includes a rotor shaft having a rotor magnet and a first shaft rotating together with the rotor magnet, and a guide shaft having a second gear connected to the first gear, and these guide shafts and rotor shafts installed side by side. The rotating shaft on the guide side is decelerated through the gears by a housing which is supported in a state and a pair of coils disposed opposite to the outer circumferential side of the rotor magnets without the second gears and applying rotational force to the rotor magnets by energization. Even when rotating, it can be a small coil type instrument.

The coiled instrument of the present invention also includes a rotor shaft having a rotor magnet and a first gear that rotates together with the rotor magnet, a guide shaft having a second gear connected to the first gear, and a rotor without a second gear. The guide side is formed by a pair of coils each having a central axis wound on an outer circumferential side of the magnet so as to intersect at a predetermined crossing angle at or near the rotational center of the rotor magnet to impart rotational force to the rotor magnet by energization. It is also possible to make a small coil type instrument even when the rotating shaft of the motor is decelerated by a gear.

The coiled instrument of the present invention further includes a rotor shaft having a rotor magnet and a first gear rotating together with the rotor magnet, a guide shaft having a second gear connected to the first gear, and these guide shafts and the rotor shaft. The housing supporting in one state and the central axis each wound around the outer circumferential side of the rotor magnet where the second gear is not disposed are opposed to each other so as to intersect at a predetermined crossing angle at or near the rotation center of the rotor magnet. Since a pair of coils apply rotational force to the rotor magnet, even when the rotating shaft on the guide side is decelerated and rotated through the gear, it can be a small coil type instrument.

In addition, the coil gauge of the present invention sets the crossing angle of the winding center axis of each coil to approximately 90 degrees, whereby the magnetic force generated by the coil can be effectively applied to the rotor magnet because the magnetic field vector generated in the coil is approximately orthogonal. have.

In addition, the coil gauge of the present invention sets the crossing angle of the winding central axis smaller than 90 degrees, whereby the width of the housing including the coil can be reduced.

Moreover, the coil type gauge of this invention is set to the rotation center coil side of a rotor magnet rather than the intersection of the winding center axis of each coil, and can make width of the housing containing a coil small by this.

Moreover, the coil type gauge of this invention has the accommodating part which a 1st gear has a 1st continuous tooth in the outer periphery, and a 2nd gear accommodates the 1st gear in the outer periphery, and has a 1st continuous tooth in the inner periphery of this accommodating part. The second continuous tooth is formed to fit in the shaft, whereby the rotor shaft and the guide shaft can be brought close to each other while the deceleration rotation of the guide shaft with respect to the rotor shaft is possible, thereby reducing the width of the coil type gauge.

In addition, in the coiled instrument of the present invention, the outer diameter of the first gear is smaller than the outer diameter of the rotor magnet, the outer diameter of the second gear is larger than the outer diameter of the first gear, and the second gear is predetermined with the rotor magnet. They are arranged so as to overlap each other at a distance, thereby eliminating the need to interpose different gears between the gears, thereby making the width of the instrument small.

In addition, the coil gauge of the present invention is formed by continuously forming a coil support portion for supporting each coil in the housing, whereby the direction of the central axis of the coil and the crossing angle of both sides can be determined with certainty. In addition, the coil can be stably maintained with the crossing angle fixed.

The coil gauge of the present invention houses the rotor magnet and the first and second gears in the housing, whereby the height can be reduced.

In addition, the coil gauge of the present invention is provided with a rotation control means for regulating the rotation of the guide shaft between the housing and the second gear, whereby the guide can be reliably stopped at a predetermined position (starting position).

In addition, the coil gauge of the present invention covers the outer periphery required area of the housing except for the area corresponding to the second gear with a cup-shaped magnetic case, whereby the magnetic case can be miniaturized and the cost can be reduced. .

In addition, the coil gauge of the present invention is provided with a fixed magnet that restricts the movement of the rotor magnet when the coil is energized in the housing, thereby reliably maintaining the instructions at a predetermined position (starting position) when the coil is energized. Can be.

In addition, the coil type instrument of the present invention is provided with a biasing member on the guide shaft which rotates the guide shaft in one direction at the time of non-energization of each coil. Position), and backlash between the first and second gears can be eliminated.

In addition, the coil type gauge of the present invention includes a rotor shaft having a rotor magnet and a first gear that rotates together with the rotor magnet, a guide shaft having a second gear installed in parallel with the rotor shaft and connected to the first gear, 2 consists of a pair of coils arranged in the radially outer circumference of the rotor magnets without any gears to impart rotational force to the rotor magnets by energization, and the rotor magnets are partially covered by each coil, thereby producing The torque can be increased.

In addition, the coil type instrument of the present invention includes a rotor shaft and a rotor shaft having a first gear that rotates together with the rotor magnet and a guide shaft having a second gear connected to the first gear, and these guide shafts and the rotor shaft. Rotor magnets are energized by arranging each of the central axes wound around the radial direction outer periphery of the rotor magnet in which the housing and the second gear are not disposed are arranged at a predetermined crossing angle at or near the rotational center of the rotor magnets. It consists of a pair of coils which impart rotational force to the rotor, and the rotor magnet is partially covered by the respective coils, whereby it is thin and can generate a large generated torque.

In addition, the coil instrument of the present invention is such that the coil is wound so that the winding diameter corresponding to at least the radial circumferential surface of the rotor magnet becomes larger toward the rotor shaft, whereby the structure can be made smaller while ensuring the winding amount, thereby allowing space. The efficiency can be improved.

In addition, the coil type instrument of the present invention is formed by continuously forming a frame portion for winding each coil in the housing, whereby the direction of the winding of each coil or the crossing angle of both sides can be reliably determined, and the winding of the central axis is thus carried out. In addition, the coil can be stably maintained with the crossing angle fixed.

1 and 2 show a first embodiment of the present invention,

1 is a plan view of a coiled instrument,

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a plan view of a coil type gauge showing a second embodiment of the present invention;

4 is a plan view showing a third embodiment of the present invention;                 

5 is a cross-sectional view showing a fourth embodiment of the present invention;

6 to 8 show a fifth embodiment of the present invention.

6 is a plan view of a coiled instrument,

7 is a cross-sectional view taken along the line A-A of FIG.

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 6.

1 and 2, which is the first embodiment of the present invention, the coil gauge is connected to the rotor shaft 3 having the rotor magnet 1 and the first gear 2 and the first gear 2 A guide shaft (5) having a second gear (4) to be fitted and mounted with a guide (P) at the tip, and the rotor shaft (3) and the guide shaft (5) in a state in which the gears (2, 4) are connected. ) Is placed side by side, and the housing 6 accommodates the rotor magnet 1 and the first and second gears 2 and 4 and the rotor magnet 1 located on the outer periphery of the housing 6. And a pair of coils 7 and 8 which are disposed opposite to each other and impart rotational force to the rotor magnet 1 by energization, and a magnetic case 9 covering a predetermined region of the housing 6.

The rotor magnet 1 is composed of, for example, a disk-shaped plastic magnet in which N and S two poles are magnetized, and the first gear 2 is composed of cog wheels having an appropriate number of continuous teeth formed on the outer circumference. In FIG. 2, the rotor magnet 1 is fixed to the rotor shaft 3 such that the rotor magnet 1 is positioned downward and the first gear 2 is positioned upward.

The second gear 4 is fixed to the guide shaft 5 with a continuous gear having a diameter larger than that of the first gear 2 and more than the first gear 2 on the outer periphery, and the rotor magnet 1 of FIG. It extends to the 1st gear 2 side and overlaps with the 1st gear 2 so that the rotor magnet 1 may overlap with the rotor magnet 1 from an upper side.

The housing 6 is made of a synthetic resin, and is divided into a first frame body 61 positioned at the lower side and a second frame body 62 positioned at the upper side in FIG. 2, and these first and second frame bodies are formed. Between the 61 and 62, the cavity part which becomes a storage part S is formed, and it supports the rotor shaft 3 and the guide shaft 5, One end of the guide shaft 5 is a housing It protrudes outward from (6).

In FIG. 2, the storage part S is positioned at a lower side and forms a first housing part S1 for accommodating the rotor magnet 1. Each storage part S1, S2 formed by the 2nd housing part 64 which forms the 2nd accommodation part S which accommodates (2, 4), and is formed by these housing parts 63 and 64. As shown in FIG. As described above, the rotor magnets 1 and 2 overlap with each other with a space therebetween, and are in communication with each other according to the relationship between the first gear 2 and the second gear 4 connected to each other. As shown in FIG. 1, the housing parts 63 and 64 have the planar shape of the arc shape according to the outer diameter shape of the rotor magnet 1 and the 2nd gear 4, respectively.

As shown in FIG. 1, the coils 7 and 8 are respectively disposed in the outer circumferential region of the first housing portion 63 located on the side opposite to the second housing portion 64 serving as the storage side of the second gear 4. The axis extending along the central axis C1, C2 toward the rotor magnet 1 crosses at the rotation center RC of the rotor magnet 1 (intersection CP), and each winding at this time is the central axis C1. , C2) is disposed opposite to the outer circumferential side of the rotor magnet 1 (the radial outer circumference of the rotor magnet 1) so that the crossing angle of C2) is approximately 90 degrees. At this time, the coils 7 and 8 each have a pair of coil support portions 65 extending in the radial direction of the rotor magnet 1 outward from the outer circumferential surface of the first housing portion 63 (the first frame body 61). , 66, and is supported by the housing 6.

In this way, the magnetic casing 9 of the cup shape is mounted to the housing 6 in which the coils 7 and 8 are wound. In this embodiment, the housing 6 of the housing 6 is removed except for an area corresponding to the second gear 4. Only the bottom part and the periphery of the first housing part 63, which does not include the required area, that is, the corresponding area of the second gear 4, is covered with the magnetic case 9.

In the coil-type instrument configured as described above, a magnetic field vector acts along the central axes C1 and C2 of the coils 7 and 8 by energization of the respective coils 7 and 8, and according to the strength of each magnetic field vector. The rotor magnet 1 (rotor shaft 3) is rotated, and the rotational force is transmitted to the guide shaft 5 through the first gear 2 and the second gear 4 and fixed to the guide shaft 5. Guideline (P) is angle driven.

At this time, the first gear 2 and the second gear 4 have respective gear ratios of, for example, 1: 3 so that the second gear 4 rotates at low speed (deceleration) with respect to the first gear 2. By this deceleration operation, the angular operation of the instruction P with less instruction error with respect to the input signal becomes possible, and the linearity (linearity) of the instruction characteristic can be ensured and the instruction with high precision can be performed. . The gear ratios of the first and second gears 2 and 4 can be arbitrarily set as long as the guide shaft 5 can be decelerated.

The housing 6 (in this case, the second frame body 62) is provided with a fixed side contact portion 62a which partially extends inside the second housing portion S2 toward the second gear 4, and The second gear 4 is provided with a movable side contact portion 4a that partially extends inside the second housing portion S2 toward the inner wall surface of the second frame body 62, and is fixed to these movable side contact portions 4a. The rotational control means for regulating the rotation of the guide shaft 5 at the side contact portion 62a is constituted, and the starting point position (for example, the minimum indicated position) of the instruction P is a position where the contact portions 4a and 62a abut. It is set to.

Thus, on the rotor shaft 3 side by regulating the rotation of the guide P between the second gear 4 and the housing 6 fixed to the guide shaft 5 on which the guide P is mounted. When the rotational regulation is implemented, the deviation of the stop position of the guideline P can be made smaller.

In addition, the rotational regulation of the guideline P may define not only the starting point position of the guideline P but also the maximum pointing position. In this way, when the maximum pointing position is specified together with the starting point regulation, for example, the second gear ( What is necessary is just to form the movable side contact part (not shown) different from the rotating side contact part 4a in 4).

In addition, as shown in FIG. 1, the housing 6 (in this case, the first frame body 61) has the fixed magnet 10 at a position that can be opposed to the outer circumferential side of the rotor magnet 1 at an appropriate interval. Is arranged, the stator magnet 10 restricts the movement of the rotor magnet 1 when the coils 7 and 8 are energized, and the guide P is moved to the movable side contact portion 4a and the fixed side contact portion ( 62a) can be held at the starting position to be the contact position. At this time, the stator magnet 10 is preferably installed so that the rotor magnet 1 can apply the movable side contact portion 4a to the stationary side contact portion 62a.

The use of the stator magnet 10 as described above is a factor inducing a map error because the magnetic force of the stator magnet 10 always acts on the rotor magnet 1, but in the present embodiment, as described above, the guide shaft ( Since 5) is configured to decelerate (rotate) the rotor shaft 3, there is an advantage in that even if there is a magnetic force influence by the fixed magnet 10, it becomes an indication error and hardly appears.

In addition, in the housing 6 (in this case, the second frame body 62), the rotor magnet 1 is applied to the guide shaft 5 protruding from the housing 6 when the coils 7 and 8 are energized. The bias member 11 which consists of a hair spring which rotates to a direction (reduction direction side) is provided, and this bias member 11 can return the instruction | command P to a starting position even when it is energized, The backlash between the first and second gears 2 and 4 can be removed.

As described above, according to the present embodiment, the rotor shaft 3 having the rotor magnet 1 and the first gear 2 rotating together with the rotor magnet 1 and the second gear connected to the first gear 2 are provided. (4) a pair of coils for applying rotational force to the housing (6) and the rotor magnet (1) supporting the guide shaft (5), the rotor shaft (3), and the guide shaft (5) in parallel with each other ( 7, 8), in which the coils 7, 8 are wound, in particular, by the respective coils 7, 8 being arranged opposite to the outer circumferential side of the rotor magnet 1 on which the second gear 4 is not arranged. The coils 7, 8 are mounted relative to the housing 6 by being disposed opposite the outer circumferential side of the rotor magnet 1 so that the central axes C1, C2 intersect at a predetermined crossing angle at the rotational center of the rotor magnet 1. Since it is not stacked, even when the guide shaft is rotated slowly through the gear, the height of the gauge can be reduced to achieve miniaturization, and the arrangement position of the coils 7 and 8 can be adjusted by the second gear 4. The coils 7 and 8 and the second gear 4 do not overlap in the axial direction of the rotor shaft 3 and the guide shaft 5 by using the outer peripheral side of the rotor magnet 1 that is not engaged. can do.

Further, according to the present embodiment, since the magnetic field vector generated in the coils 7 and 8 is approximately orthogonal by setting the crossing angles of the central axes C1 and C2 of the coils 7 and 8 to approximately 90 degrees, the coils are orthogonal. The magnetic force by (7, 8) can be effectively applied to the rotor magnet 1.

In addition, according to the present embodiment, the outer diameter of the first gear 2 is smaller than the outer diameter of the rotor magnet 1, and the outer diameter of the second gear 4 is larger than the outer diameter of the first gear 2, Moreover, since the 2nd gear 4 is arrange | positioned so that it may overlap with the rotor magnet 1 at a predetermined distance, it is not necessary to interpose a gear between each gear 2 and 4, and can make a width | variety of a meter small. .

Further, according to the present embodiment, the central shafts C1 and C2 wound around the coils 7 and 8 by continuously forming the coil support portions 65 and 66 supporting the respective coils 7 and 8 in the housing 6. Direction and both crossing angles can be determined reliably, and the coils 7 and 8 can be stably maintained in a state where the directions and crossing angles of the central axes C1 and C2 are thus fixed.

In addition, according to the present embodiment, the height can be reduced by storing the rotor magnet 1 and the first and second gears 2 and 4 in the housing 6.

Further, according to this embodiment, there is provided a rotation control means composed of a movable side contact portion 4a and a fixed side contact portion 62a which regulate the rotation of the guide shaft 5 between the housing 6 and the second gear 4. By doing so, the instruction P can be reliably stopped at a predetermined position (starting position).

In addition, according to the present embodiment, the coils 6 and 8 are provided in the housing 6 by providing the stator magnet 10 which restricts the movement of the rotor magnet 1 when the coils 7 and 8 are energized. At the time of non-energization, the instruction P can be surely kept at a predetermined position (starting position).

Further, according to this embodiment, the biasing member 11 made of a hair spring for rotating the rotor magnets 1 in one direction when the coils 7 and 8 are energized is not provided in the guide shaft 5. Even when the coils 7 and 8 are energized, the instruction P can be returned to a predetermined position (starting position), and the backlash between the first and second gears 2 and 4 can be removed.

In addition, according to the present embodiment, the magnetic case 9 can be miniaturized by covering the outer peripheral area of the housing 6 except for the region corresponding to the second gear 4 with the cup-shaped magnetic case 9. The cost can be reduced.

In addition, in this embodiment, although the center of rotation RC of the rotor magnet 1 and the intersection CP of the winding center axes C1 and C2 of each coil 7 and 8 corresponded, it showed, As a second embodiment, as shown in FIG. 3, the intersection CP of the winding central axes C1 and C2 of each coil 7 and 8 may be set near the rotational center RC of the rotor magnet 1. have. In addition, the vicinity of the rotation center RC here means the rotor magnet 1 which can drive the rotor magnet 1 as an instrument when setting the intersection CP of each coil 7 and 8 in the rotor magnet 1. ) To include the central region.

In particular, the intersection CP of the central axes C1 and C2 of the coils 7 and 8 is set to the side of the guide shaft 5 rather than the rotation center RC of the rotor magnet 1 (of the rotor magnet 1). The housing including the coils 7 and 8 by setting the rotational center RC to the coils 7 and 8 side rather than the intersections CP of the central axes C1 and C2 of the coils 7 and 8. The width W1 (see FIG. 3) of (6) can be made small.                 

In addition, in the above-described first and second embodiments, the crossing angles of the winding central axes C1 and C2 of the coils 7 and 8 are set to approximately 90 degrees, but as shown in FIG. 4 as the third embodiment of the present invention. Similarly, the crossing angles of the winding central axes C1 and C2 may be set smaller than 90 degrees (80 degrees in FIG. 4), and the coils 7 and 8 may be included by setting the crossing angles below 90 degrees. The width W2 (see FIG. 4) of the housing 6 can be made small.

In the first to third embodiments described above, the case where the first and second gears 2 and 4 are fitted to each other in these outer peripheries is shown. For example, as the fourth embodiment of the present invention, shown in FIG. As described above, the first gear 2 is formed with a first continuous tooth 2a at its outer circumference, and the second gear 4 has a gear storing portion 4b for accommodating the first gear 2 at its outer circumference. In addition, a second continuous tooth 4c fitted to the first continuous tooth 2a may be formed in the inner circumference of the housing portion 4b, and the guide shaft 5 with respect to the rotor shaft 3 can be formed by such a configuration. The rotor shaft 3 and the guide shaft 5 can be brought into close proximity to each other while enabling the deceleration rotation of the c), and the width thereof can be reduced as compared with the coil gauges according to the first to third embodiments described above.

In the coil gauge according to the fourth embodiment of the present invention, a cutout portion 64a for partially exposing the end portion of the second gear 4 from the second housing portion 64 is provided. 64a) further reduces the width of the coil gauge.

In the coil gauge according to the fourth embodiment of the present invention, the rotor shaft 3 is formed of a fixed shaft supported by the housing 6 by being integrally formed from the first frame body 61. The rotor magnet 1 and the first gear 2 corresponding thereto are rotatably supported by the rotor shaft 3 made of a shaft. In this case, the first gear 2 is, for example, a rotor magnet made of a plastic magnet. It is continuously formed integrally with (1). In this way, the number of parts can be reduced by the rotor shaft 3 having a fixed shaft integrally formed from the housing 6.

Subsequently, a fifth embodiment of the present invention will be described.

6 to 8, the coil type gauge has a rotor shaft 3 having a rotor magnet 1 and a first gear 2 and a second gear 4 which connects and fits with the first gear 2. In addition, the guide shaft (P) is attached to the tip and the rotor shaft in a state in which the guide shaft (5) for rotating the guide (P) in accordance with the rotation of the second gear (4) and the respective gears (2, 4) are connected. (3) of the housing (6) and the rotor magnet (1) for supporting the rotor shaft (1), the first and second gears (2, 4) and supporting the rotor shaft (1) in a state where they are installed side by side. A pair of coils 7 and 8 arranged on a radial outer periphery and applying rotational force to the rotor magnet 1 by energization and a magnetic case 9 made of a metal covering a predetermined region of the housing 6 are provided.

The rotor magnet 1 is made of, for example, a disk-shaped plastic magnet in which four poles of N and S are alternately magnetized, and the first gear 2 is made of a cog wheel having an appropriate number of continuous teeth formed on the outer circumference thereof. The rotor magnet 1 is fixed to the rotor shaft 3 so that the rotor magnet 1 may be located below and the 1st gear 2 may be located upward.

The second gear 4 has a larger diameter than the first gear 2 and is fixed to the guide shaft 5 with more continuous teeth than the first gear 2 on the outer circumference, and the rotor magnet 1 in FIG. 7. On the upper side of the first and second gears 2, the first gear 2 is fitted with the first gear 2 so as to overlap the rotor magnet 1 with a proper space.                 

The housing 6 is made of synthetic resin, and is divided into a first frame body 61 positioned at the lower side and a second frame body 62 positioned at the upper side in FIG. 7, and the first and second frame bodies ( The cavity part used as the storage part S is formed between 61 and 62, and the rotor shaft 3 and the guide shaft 5 are supported.

In FIG. 7, the storage part S is located at the lower side in FIG. 7, and the first storage part S1 is configured to accommodate the rotor magnet 1 and a second is located at the upper side to accommodate the first and second gears 2 and 4. Comprising a receiving portion (S2), each of the receiving portion (S1, S2) is a rotor magnet (1) and the second gear (4) and the first gear (2) and the second gear ( They communicate with each other according to 4).

In this case, the frame portion 630 wound around the first and second frame bodies 61 and 62 in the housing 6 region corresponding to the radial outer circumference of the rotor magnet 1 in which the second gear 4 is not arranged. , 640 are formed, and the coils 7 and 8 are wound around and mounted on the winding frame portions 630 and 640.

As shown in FIGS. 6 and 8, the winding frame portions 630 and 640 have a winding portion 650 for winding each coil 7 and 8 and a pair of opposing walls 660 for fitting the winding portions 650. These opposing walls 660 hold both ends of the coils 7 and 8. In addition, in this embodiment, the winding part 650 is formed so that the outer shape corresponding to the radial direction peripheral surface of the rotor magnet 1 may become larger toward the rotor shaft 3.

The coils 7 and 8 are wound on the winding frame portions 630 and 640 so as to be located on the radially outer circumference (outer side) of the rotor magnet 1 in which the second gear 4 is not arranged, thereby rotating the rotor magnet 1. The winding diameter corresponding to the radial circumferential surface of the coil is provided so as to become larger toward the rotor shaft 3, and at this time, the rotor shaft 3 is wound along the central axes C1 and C2 of the coils 7 and 8. The axis extending toward) crosses at the rotational center RC of the rotor magnet 1 (intersection CP), and the crossing angles of the respective winding central axes C1 and C2 are set to approximately 135 degrees in this embodiment. It is. At the ends of the rotor magnets 1 side of each of the coils 7 and 8, coating portions 71 and 81 which partially cover the rotor magnets 1 are formed.

The coating parts 71 and 81 partially cover the rotor magnet 1 so as to accommodate the radial direction outer periphery of the rotor magnet 1 therein.

As described above, the cup-shaped magnetic case 9 is mounted on the housing 6 in which the coils 7 and 8 are wound. However, in the present embodiment, the housing 6 of the housing 6 except for the region corresponding to the second gear 4 is mounted. Only the bottom part and the periphery of the first housing part 63, which does not include the required area, that is, the corresponding area of the second gear 4, is covered with the magnetic case 9.

In the coil-type instrument configured as described above, the magnetic field vectors move along the central axes C1 and C2 of the coils 7 and 8 by exciting each of the coils 7, 8, and each of the magnetic field vectors. According to the strength of the four-pole magnetized rotor magnet (1) (rotor shaft (3)) is rotated, the rotational force is transmitted to the guide shaft (5) via the first gear (2), the second gear (4) The guide P fixed to the guide shaft 5 is angularly driven.

At this time, the first gear 2 and the second gear 4 have respective gear ratios of, for example, 1: 5 so that the second gear 4 rotates at low speed (deceleration) with respect to the first gear 2. By this deceleration operation, the angular operation of the instruction P with less instruction error with respect to the input signal becomes possible, and the linearity of the instruction characteristic can be ensured, so that the instruction with high precision can be executed. . The gears of the first and second gears 2 and 4 can be arbitrarily set as long as the guide shaft 5 can be decelerated.

As described above, according to this embodiment, the rotor shaft 1 and the rotor shaft 3 holding the first gear 2 rotating together with the rotor magnet 1 are provided, and the first gear 2 is provided. The guide shaft 5 which drives the guide P according to the rotation of this second gear 4 by holding the 2nd gear 4 connected and driven is provided, and these guide shafts 5 and the rotor shaft 3 ), The central shafts C1 and C2 wound around the radial direction outer periphery of the rotor magnet 1, in which the housing 6 supporting the state is installed side by side, and the second gear 4 is not disposed. A pair of coils 7 and 8 which are arranged to intersect at an intersection angle of approximately 45 degrees at the rotation center CR of (3) and impart rotational force to the rotor magnet 1 by energization are provided. 8) Coils 7 and 8 are arranged in the radially outer circumference of the rotor magnet 1 by forming covering portions 71 and 81 which partially cover the radially outer circumferential portion of the rotor magnet 1. W by increasing the action of the rotor magnet 1 with the covering (71, 81) of the magnetic field coil (7,8) while maintaining a thin it is possible to increase the output torque of the rotor. In addition, since the number of coils 7 and 8 to be used can be set to the minimum required, a coil type instrument can be configured with fewer coils 7 and 8 than in the prior art, and the size and size of the external size can be achieved. have.

In the present embodiment, the coils 7 and 8 are wound so that the winding diameter corresponding to at least the radial circumferential surface of the rotor magnet becomes larger toward the rotor shaft 3 while ensuring a sufficient winding amount. The external dimensions of 8) can be made small, thereby increasing the space efficiency.

In this embodiment, the winding frame portions 63, 64 are continuously formed in the housing 6 supporting both the rotor shaft 3 and the guide shaft 5, and the winding frame portions 63, 64 are each formed on the winding frame portions 63, 64. By winding the coils 7 and 8, the direction of the windings of the coils 7 and 8 and the crossing angles of both sides can be determined with certainty. The coil can be kept stable in a certain state.

In addition, in the present embodiment, the intersection angles of the winding center axes C1 and C2 of the coils 7 and 8 are set to approximately 135 degrees using the rotor magnets 1 magnetized by alternating N and S poles. After magnetization of the magnet 1, the crossing angle of the winding central axes C1 and C2 is arbitrary, for example, the magnetization number of the rotor magnet 1 is 6 poles, and the winding center of each coil 7 and 8 is carried out. The crossing angles of the axes C1 and C2 may be set to approximately 150 degrees.

According to the present embodiment, the outer diameter of the first gear 2 is smaller than the outer diameter of the rotor magnet 1, and the outer diameter of the second gear 4 is larger than the outer diameter of the first gear 2, Moreover, since the 2nd gear 4 is arrange | positioned so that it may overlap each other with the rotor magnet 1 by a predetermined distance, it is not necessary to interpose another gear between each gear 2, 4, and the width | variety of a meter can be made small. .

In addition, in this embodiment, although the rotational center RC of the rotor magnet 1 and the intersection CP of the winding center axes C1 and C2 of each coil 7 and 8 corresponded, each coil ( The intersections CP of the winding center axes C1 and C2 of 7, 8) may be set in the vicinity of the rotation center RC of the rotor magnet 1. In addition, the vicinity of the rotation center RC here means the rotor magnet 1 which can drive the rotor magnet 1 as an instrument when setting the intersection CP of each coil 7 and 8 in the rotor magnet 1. ) To include the central region.

The present invention is not limited to a vehicle combination instrument, and can be widely applied as a driving source for various instruments mounted on a ship or an aircraft, for example.

Claims (25)

A rotor shaft having a rotor magnet and a first gear rotating together with the rotor magnet; A guide shaft having a second gear installed in parallel with the rotor shaft and connected to the first gear; And And a pair of coils disposed on the outer circumferential side surface of the rotor magnet where the second gear is not disposed so as not to overlap with the second gear so as to apply rotational force to the rotor magnet by energization. A rotor shaft having a rotor magnet and a first gear rotating together with the rotor magnet; A guide shaft having a second gear connected to the first gear; A housing for supporting the guide shaft and the rotor shaft in a state of being installed side by side; And And a pair of coils disposed on the outer circumferential side surface of the rotor magnet where the second gear is not disposed so as not to overlap with the second gear so as to apply rotational force to the rotor magnet by energization. A rotor shaft having a rotor magnet and a first gear that rotates with the rotor magnet; A guide shaft having a second gear installed in parallel with the rotor shaft and connected to the first gear; And Each winding central axis on the outer circumferential side surface of the rotor magnet where the second gear is not disposed is disposed to face each other so as not to overlap with the second gear while crossing at a predetermined crossing angle at or near the rotation center of the rotor magnet. And a pair of coils to impart rotational force to the rotor magnet. A rotor shaft having a rotor magnet and a first gear rotating together with the rotor magnet; A guide shaft having a second gear connected to the first gear; A housing supporting the guide shaft and the rotor shaft in a state where they are installed side by side; And Each winding central axis on the outer circumferential side surface of the rotor magnet, in which the second gear is not disposed, is disposed to face each other so as not to overlap the second gear while crossing at a predetermined crossing angle at or near the rotation center of the rotor magnet. And a pair of coils to impart rotational force to the rotor magnet. The method according to claim 3 or 4, A coil type instrument, characterized in that said crossing angle is 90 degrees. The method according to claim 3 or 4, A coiled instrument, characterized in that said crossing angle is less than 90 degrees. The method according to claim 3 or 4, The coil type instrument, characterized in that the rotational center of the rotor magnet is located toward the coil side rather than the intersection of the winding center axis of each coil. The method of claim 5, The coil type instrument, characterized in that the rotational center of the rotor magnet is located toward the coil side rather than the intersection of the winding center axis of each coil. The method according to claim 1 or 2, The first gear has a first continuous tooth on the outer circumference, and the second gear has a receiving part for accommodating the first gear on the outer circumference, and the second gear is fitted to the first continuous tooth on the inner circumference of the receiving part. Coil type instrument characterized by forming a continuous tooth. The method according to claim 3 or 4, The first gear has a first continuous tooth on the outer circumference, and the second gear has a receiving part for accommodating the first gear on the outer circumference, and the second gear is fitted to the first continuous tooth on the inner circumference of the receiving part. Coil type instrument characterized by forming a continuous tooth. The method according to claim 1 or 2, The outer diameter of the first gear is smaller than the outer diameter of the rotor magnet, the outer diameter of the second gear is larger than the outer diameter of the first gear, and the second gear overlaps each other at a predetermined distance from the rotor magnet. Coil-type instrument, characterized in that arranged to. The method according to claim 3 or 4, The outer diameter of the first gear is smaller than the outer diameter of the rotor magnet, the outer diameter of the second gear is larger than the outer diameter of the first gear, and the second gear overlaps each other at a predetermined distance from the rotor magnet. Coil-type instrument, characterized in that arranged to. The method according to claim 2 or 4, Coil-type instrument, characterized in that formed in the housing to support the coil support portion for supporting the respective coils continuously. The method according to claim 2 or 4, And the rotor magnet and the first and second gears are housed in the housing. The method according to claim 2 or 4, Coil type instrument, characterized in that a rotation regulating means for regulating the rotation of the guideline between the housing and the second gear. The method according to claim 2 or 4, Coil-type instrument, characterized in that the required area of the housing except for the area corresponding to the second gear is covered with a cup-shaped magnetic case. The method according to claim 1 or 2, A coil gauge provided with a fixed magnet for limiting the movement of the rotor magnet when the coils are energized. The method according to claim 3 or 4, A coil gauge provided with a fixed magnet for limiting the movement of the rotor magnet when the coils are energized. The method according to claim 1 or 2, And a bias member for rotating the guide shaft in one direction when the coils are not energized. The method according to claim 3 or 4, And a bias member for rotating the guide shaft in one direction when the coils are not energized. A rotor shaft having a rotor magnet and a first gear rotating together with the rotor magnet; A guide shaft having a second gear installed in parallel with the rotor shaft and connected to the first gear; And A pair of coils arranged so as not to overlap with the second gear in a radial direction outer peripheral portion of the rotor magnet in which the second gear is not disposed, to impart rotational force to the rotor magnet by energization; And the rotor magnet is partially covered by the respective coils. A rotor shaft having a rotor magnet and a first gear rotating together with the rotor magnet; A guide shaft having a second gear connected to the first gear; A housing supporting the guide shaft and the rotor shaft in a state where they are installed side by side; And Each of the central axes of the rotor magnets in which the second gear is not disposed in the radial direction outer periphery of the rotor magnets is disposed so as not to overlap with the second gears while intersecting at a predetermined crossing angle at or near the rotational center of the rotor magnets. By a pair of coils to impart rotational force to the rotor magnet, And the rotor magnet is partially covered by the respective coils. The method of claim 21 or 22, And the coil is wound such that at least a winding diameter corresponding to the radial circumferential surface of the rotor magnet is gradually increased toward the rotor shaft. The method of claim 22, Coil-type instrument, characterized in that formed by continuously forming a frame portion for winding each coil in the housing. The method of claim 6, The coil type instrument, characterized in that the rotational center of the rotor magnet is located toward the coil side rather than the intersection of the winding center axis of each coil.

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